Smoke detector(SM-402)
Features:
1. Ceiling or wall mounting
2. Easy to install with mounting hardware included
3. 9V/12V battery operated
4. Suitable for any room
5. Flash alarm indicator
6. Test button for easy recommended monthly testing
7. Low battery signal
8. Safety clip feature, not allow mounting of smoke alarm without battery installed
9. Photoelectric chamber for early detection from all directions
10. Loud 85dB alarm signal
11. Independent & Network optional
12. Transmission Frequency: 315/433MHz

Specification
1. Power Source: 9V/12V DC
2. Operating Current: 10 uA (normal) and 10-30 mA (alarm working)
3. Sensitivity to smoke: In comply with U1217, testing value is 3.2% per feet
4. Operating Temperature: -10° C-50° C
5. Ambient Humidity: 10% - 90%.
6. Horn Level: 85 Decibels at 3M range.
7. Transmitting frequency: 315MHz/433MHz
8. Battery life: 1 year min
9. Size: 105mmX25mm